121362375990 has 32 divisors (see below), whose sum is σ = 292748243040. Its totient is φ = 32199017984.

The previous prime is 121362375977. The next prime is 121362376001. The reversal of 121362375990 is 99573263121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10261635 + ... + 10273454.

It is an arithmetic number, because the mean of its divisors is an integer number (9148382595).

Almost surely, 2^121362375990 is an apocalyptic number.

121362375990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121362375990 is an abundant number, since it is smaller than the sum of its proper divisors (171385867050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121362375990 is a wasteful number, since it uses less digits than its factorization.

121362375990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20535296.

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 121362375990 in words is "one hundred twenty-one billion, three hundred sixty-two million, three hundred seventy-five thousand, nine hundred ninety".